AirHint found the following cheapest return flights from Boston (BOS) to Zurich (ZRH) in December 2025 (see full year).

Return flights

02 Dec - 09 Dec	United	direct
03 Dec - 10 Dec	United	direct
12 Dec - 26 Dec	TAP
15 Dec - 29 Dec	TAP
12 Dec - 21 Dec	Icelandair
07 Dec - 14 Dec	United	direct
08 Dec - 15 Dec	United	direct
15 Dec - 28 Dec	TAP
13 Dec - 20 Dec	Icelandair
12 Dec - 19 Dec	United
07 Dec - 04 Jan	Scandinavian Airlines
21 Dec - 10 Jan	Scandinavian Airlines
26 Dec - 06 Jan	Aer Lingus
11 Dec - 03 Jan	Scandinavian Airlines
24 Dec - 02 Jan	British Airways
20 Dec - 04 Jan	Scandinavian Airlines
26 Dec - 06 Jan	SWISS	direct
11 Dec - 03 Jan	SWISS	direct
27 Dec - 03 Jan	Icelandair
24 Dec - 02 Jan	SWISS	direct

Also check the deals for one-way flights from Boston to Zurich in December.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from Boston to Zurich in December from 467€

Return flights